How to use special characters in REPLY_REQUEST in INPUT_DATA description value?

How to use special characters in REPLY_REQUEST in INPUT_DATA description value?

Hi I need to send an email via the REST API using REPLY_REQUEST my description must be such that: like the xml format? In the application under conversations is OK, but sent email is empty. So how do you send emai by RESTAPI where the value of description is: Regards, Pawel

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